Check out this 2015 GMC Sierra 3500HD available WiFi Denali. Its Automatic transmission and Turbocharged Diesel V8 6.6L/403 engine will keep you going. This GMC Sierra 3500HD available WiFi has the following options: WHEELS, 18 (45.7 CM) CHROMED ALUMINUM includes 18 x 8 (45.7 cm x 20.3 cm) steel spare wheel. (STD), TRANSMISSION, ALLISON 1000 6-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED with overdrive, electronic engine grade braking and tow/haul mode, TRAILERING WIRING PROVISIONS, FOR CAMPER, FIFTH WHEEL AND GOOSENECK TRAILER includes additional 7-way wiring harness is located at the rear of the pickup box attached to the rear frame cross member, TIRES, LT265/70R18E ALL-TERRAIN, BLACKWALL, SUSPENSION PACKAGE, STANDARD includes 51mm twin tube shock absorbers and 33mm front stabilizer bar (STD), SUNROOF, POWER, SUMMIT WHITE, SEATS, FRONT FULL-FEATURE LEATHER-APPOINTED BUCKET WITH (KA1) HEATED SEAT CUSHIONS AND SEAT BACKS. Includes 10-way power driver and front passenger seat adjusters, including 2-way power lumbar control, 2-position driver memory, adjustable head restraints, (D07) floor console and storage pockets. (STD), REAR AXLE, 3.73 RATIO, and PICKUP BOX (STD). See it for yourself at Covert Chevrolet Buick GMC, 702 Hwy 71 West, Bastrop, TX 78602.